src/kitemviews/kitemlistcontroller.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
   3  * SPDX-FileCopyrightText: 2012 Frank Reininghaus <frank78ac@googlemail.com>
   4  *
   5  * Based on the Itemviews NG project from Trolltech Labs
   6  *
   7  * SPDX-License-Identifier: GPL-2.0-or-later
   8  */
   9
  10 #include "kitemlistcontroller.h"
  11
  12 #include "kitemlistselectionmanager.h"
  13 #include "kitemlistview.h"
  14 #include "private/kitemlistkeyboardsearchmanager.h"
  15 #include "private/kitemlistrubberband.h"
  16 #include "views/draganddrophelper.h"
  17
  18 #include <KTwoFingerSwipe>
  19 #include <KTwoFingerTap>
  20 #include <KUrlMimeData>
  21
  22 #include <QAccessible>
  23 #include <QApplication>
  24 #include <QDrag>
  25 #include <QGesture>
  26 #include <QGraphicsScene>
  27 #include <QGraphicsSceneEvent>
  28 #include <QGraphicsView>
  29 #include <QMimeData>
  30 #include <QTimer>
  31 #include <QTouchEvent>
  32
  33 KItemListController::KItemListController(KItemModelBase *model, KItemListView *view, QObject *parent)
  34     : QObject(parent)
  35     , m_singleClickActivationEnforced(false)
  36     , m_selectionMode(false)
  37     , m_selectionTogglePressed(false)
  38     , m_clearSelectionIfItemsAreNotDragged(false)
  39     , m_isSwipeGesture(false)
  40     , m_dragActionOrRightClick(false)
  41     , m_scrollerIsScrolling(false)
  42     , m_pinchGestureInProgress(false)
  43     , m_mousePress(false)
  44     , m_isTouchEvent(false)
  45     , m_selectionBehavior(NoSelection)
  46     , m_autoActivationBehavior(ActivationAndExpansion)
  47     , m_mouseDoubleClickAction(ActivateItemOnly)
  48     , m_model(nullptr)
  49     , m_view(nullptr)
  50     , m_selectionManager(new KItemListSelectionManager(this))
  51     , m_keyboardManager(new KItemListKeyboardSearchManager(this))
  52     , m_pressedIndex(std::nullopt)
  53     , m_pressedMouseGlobalPos()
  54     , m_autoActivationTimer(nullptr)
  55     , m_swipeGesture(Qt::CustomGesture)
  56     , m_twoFingerTapGesture(Qt::CustomGesture)
  57     , m_oldSelection()
  58     , m_keyboardAnchorIndex(-1)
  59     , m_keyboardAnchorPos(0)
  60 {
  61     connect(m_keyboardManager, &KItemListKeyboardSearchManager::changeCurrentItem, this, &KItemListController::slotChangeCurrentItem);
  62     connect(m_selectionManager, &KItemListSelectionManager::currentChanged, m_keyboardManager, &KItemListKeyboardSearchManager::slotCurrentChanged);
  63     connect(m_selectionManager, &KItemListSelectionManager::selectionChanged, m_keyboardManager, &KItemListKeyboardSearchManager::slotSelectionChanged);
  64
  65     m_autoActivationTimer = new QTimer(this);
  66     m_autoActivationTimer->setSingleShot(true);
  67     m_autoActivationTimer->setInterval(-1);
  68     connect(m_autoActivationTimer, &QTimer::timeout, this, &KItemListController::slotAutoActivationTimeout);
  69
  70     setModel(model);
  71     setView(view);
  72
  73     m_swipeGesture = QGestureRecognizer::registerRecognizer(new KTwoFingerSwipeRecognizer());
  74     m_twoFingerTapGesture = QGestureRecognizer::registerRecognizer(new KTwoFingerTapRecognizer());
  75     view->grabGesture(m_swipeGesture);
  76     view->grabGesture(m_twoFingerTapGesture);
  77     view->grabGesture(Qt::TapGesture);
  78     view->grabGesture(Qt::TapAndHoldGesture);
  79     view->grabGesture(Qt::PinchGesture);
  80 }
  81
  82 KItemListController::~KItemListController()
  83 {
  84     setView(nullptr);
  85     Q_ASSERT(!m_view);
  86
  87     setModel(nullptr);
  88     Q_ASSERT(!m_model);
  89 }
  90
  91 void KItemListController::setModel(KItemModelBase *model)
  92 {
  93     if (m_model == model) {
  94         return;
  95     }
  96
  97     KItemModelBase *oldModel = m_model;
  98     if (oldModel) {
  99         oldModel->deleteLater();
 100     }
 101
 102     m_model = model;
 103     if (m_model) {
 104         m_model->setParent(this);
 105     }
 106
 107     if (m_view) {
 108         m_view->setModel(m_model);
 109     }
 110
 111     m_selectionManager->setModel(m_model);
 112
 113     Q_EMIT modelChanged(m_model, oldModel);
 114 }
 115
 116 KItemModelBase *KItemListController::model() const
 117 {
 118     return m_model;
 119 }
 120
 121 KItemListSelectionManager *KItemListController::selectionManager() const
 122 {
 123     return m_selectionManager;
 124 }
 125
 126 void KItemListController::setView(KItemListView *view)
 127 {
 128     if (m_view == view) {
 129         return;
 130     }
 131
 132     KItemListView *oldView = m_view;
 133     if (oldView) {
 134         disconnect(oldView, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 135         oldView->deleteLater();
 136     }
 137
 138     m_view = view;
 139
 140     if (m_view) {
 141         m_view->setParent(this);
 142         m_view->setController(this);
 143         m_view->setModel(m_model);
 144         connect(m_view, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 145         updateExtendedSelectionRegion();
 146     }
 147
 148     Q_EMIT viewChanged(m_view, oldView);
 149 }
 150
 151 KItemListView *KItemListController::view() const
 152 {
 153     return m_view;
 154 }
 155
 156 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 157 {
 158     m_selectionBehavior = behavior;
 159     updateExtendedSelectionRegion();
 160 }
 161
 162 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 163 {
 164     return m_selectionBehavior;
 165 }
 166
 167 void KItemListController::setAutoActivationBehavior(AutoActivationBehavior behavior)
 168 {
 169     m_autoActivationBehavior = behavior;
 170 }
 171
 172 KItemListController::AutoActivationBehavior KItemListController::autoActivationBehavior() const
 173 {
 174     return m_autoActivationBehavior;
 175 }
 176
 177 void KItemListController::setMouseDoubleClickAction(MouseDoubleClickAction action)
 178 {
 179     m_mouseDoubleClickAction = action;
 180 }
 181
 182 KItemListController::MouseDoubleClickAction KItemListController::mouseDoubleClickAction() const
 183 {
 184     return m_mouseDoubleClickAction;
 185 }
 186
 187 int KItemListController::indexCloseToMousePressedPosition() const
 188 {
 189     const QPointF pressedMousePos = m_view->transform().map(m_view->scene()->views().first()->mapFromGlobal(m_pressedMouseGlobalPos.toPoint()));
 190
 191     QHashIterator<KItemListWidget *, KItemListGroupHeader *> it(m_view->m_visibleGroups);
 192     while (it.hasNext()) {
 193         it.next();
 194         KItemListGroupHeader *groupHeader = it.value();
 195         const QPointF mappedToGroup = groupHeader->mapFromItem(nullptr, pressedMousePos);
 196         if (groupHeader->contains(mappedToGroup)) {
 197             return it.key()->index();
 198         }
 199     }
 200     return -1;
 201 }
 202
 203 void KItemListController::setAutoActivationDelay(int delay)
 204 {
 205     m_autoActivationTimer->setInterval(delay);
 206 }
 207
 208 int KItemListController::autoActivationDelay() const
 209 {
 210     return m_autoActivationTimer->interval();
 211 }
 212
 213 void KItemListController::setSingleClickActivationEnforced(bool singleClick)
 214 {
 215     m_singleClickActivationEnforced = singleClick;
 216 }
 217
 218 bool KItemListController::singleClickActivationEnforced() const
 219 {
 220     return m_singleClickActivationEnforced;
 221 }
 222
 223 void KItemListController::setSelectionModeEnabled(bool enabled)
 224 {
 225     m_selectionMode = enabled;
 226 }
 227
 228 bool KItemListController::selectionMode() const
 229 {
 230     return m_selectionMode;
 231 }
 232
 233 bool KItemListController::isSearchAsYouTypeActive() const
 234 {
 235     return m_keyboardManager->isSearchAsYouTypeActive();
 236 }
 237
 238 bool KItemListController::keyPressEvent(QKeyEvent *event)
 239 {
 240     int index = m_selectionManager->currentItem();
 241     int key = event->key();
 242     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 243
 244     const bool horizontalScrolling = m_view->scrollOrientation() == Qt::Horizontal;
 245
 246     // Handle the expanding/collapsing of items
 247     // expand / collapse all selected directories
 248     if (m_view->supportsItemExpanding() && m_model->isExpandable(index) && (key == Qt::Key_Right || key == Qt::Key_Left)) {
 249         const bool expandOrCollapse = key == Qt::Key_Right ? true : false;
 250         bool shouldReturn = m_model->setExpanded(index, expandOrCollapse);
 251
 252         // edit in reverse to preserve index of the first handled items
 253         const auto selectedItems = m_selectionManager->selectedItems();
 254         for (auto it = selectedItems.rbegin(); it != selectedItems.rend(); ++it) {
 255             shouldReturn |= m_model->setExpanded(*it, expandOrCollapse);
 256             if (!shiftPressed) {
 257                 m_selectionManager->setSelected(*it);
 258             }
 259         }
 260         if (shouldReturn) {
 261             // update keyboard anchors
 262             if (shiftPressed) {
 263                 m_keyboardAnchorIndex = selectedItems.count() > 0 ? qMin(index, selectedItems.last()) : index;
 264                 m_keyboardAnchorPos = keyboardAnchorPos(m_keyboardAnchorIndex);
 265             }
 266
 267             event->ignore();
 268             return true;
 269         }
 270     }
 271
 272     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 273     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 274     const bool navigationPressed = key == Qt::Key_Home || key == Qt::Key_End || key == Qt::Key_PageUp || key == Qt::Key_PageDown || key == Qt::Key_Up
 275         || key == Qt::Key_Down || key == Qt::Key_Left || key == Qt::Key_Right;
 276
 277     const int itemCount = m_model->count();
 278
 279     // For horizontal scroll orientation, transform
 280     // the arrow keys to simplify the event handling.
 281     if (horizontalScrolling) {
 282         switch (key) {
 283         case Qt::Key_Up:
 284             key = Qt::Key_Left;
 285             break;
 286         case Qt::Key_Down:
 287             key = Qt::Key_Right;
 288             break;
 289         case Qt::Key_Left:
 290             key = Qt::Key_Up;
 291             break;
 292         case Qt::Key_Right:
 293             key = Qt::Key_Down;
 294             break;
 295         default:
 296             break;
 297         }
 298     }
 299
 300     if (m_view->layoutDirection() == Qt::RightToLeft) {
 301         if (horizontalScrolling) {
 302             // swap up and down arrow keys
 303             switch (key) {
 304             case Qt::Key_Up:
 305                 key = Qt::Key_Down;
 306                 break;
 307             case Qt::Key_Down:
 308                 key = Qt::Key_Up;
 309                 break;
 310             default:
 311                 break;
 312             }
 313         } else if (!m_view->supportsItemExpanding()) {
 314             // swap left and right arrow keys
 315             switch (key) {
 316             case Qt::Key_Left:
 317                 key = Qt::Key_Right;
 318                 break;
 319             case Qt::Key_Right:
 320                 key = Qt::Key_Left;
 321                 break;
 322             default:
 323                 break;
 324             }
 325         }
 326     }
 327
 328     const bool selectSingleItem = m_selectionBehavior != NoSelection && itemCount == 1 && navigationPressed;
 329
 330     if (selectSingleItem) {
 331         const int current = m_selectionManager->currentItem();
 332         m_selectionManager->setSelected(current);
 333         return true;
 334     }
 335
 336     switch (key) {
 337     case Qt::Key_Home:
 338         index = 0;
 339         m_keyboardAnchorIndex = index;
 340         m_keyboardAnchorPos = keyboardAnchorPos(index);
 341         break;
 342
 343     case Qt::Key_End:
 344         index = itemCount - 1;
 345         m_keyboardAnchorIndex = index;
 346         m_keyboardAnchorPos = keyboardAnchorPos(index);
 347         break;
 348
 349     case Qt::Key_Left:
 350         if (index > 0) {
 351             const int expandedParentsCount = m_model->expandedParentsCount(index);
 352             if (expandedParentsCount == 0) {
 353                 --index;
 354             } else {
 355                 // Go to the parent of the current item.
 356                 do {
 357                     --index;
 358                 } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount);
 359             }
 360             m_keyboardAnchorIndex = index;
 361             m_keyboardAnchorPos = keyboardAnchorPos(index);
 362         }
 363         break;
 364
 365     case Qt::Key_Right:
 366         if (index < itemCount - 1) {
 367             ++index;
 368             m_keyboardAnchorIndex = index;
 369             m_keyboardAnchorPos = keyboardAnchorPos(index);
 370         }
 371         break;
 372
 373     case Qt::Key_Up:
 374         updateKeyboardAnchor();
 375         if (shiftPressed && !m_selectionManager->isAnchoredSelectionActive() && m_selectionManager->isSelected(index)) {
 376             m_selectionManager->beginAnchoredSelection(index);
 377         }
 378         index = previousRowIndex(index);
 379         break;
 380
 381     case Qt::Key_Down:
 382         updateKeyboardAnchor();
 383         if (shiftPressed && !m_selectionManager->isAnchoredSelectionActive() && m_selectionManager->isSelected(index)) {
 384             m_selectionManager->beginAnchoredSelection(index);
 385         }
 386         index = nextRowIndex(index);
 387         break;
 388
 389     case Qt::Key_PageUp:
 390         if (horizontalScrolling) {
 391             // The new current index should correspond to the first item in the current column.
 392             int newIndex = qMax(index - 1, 0);
 393             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) {
 394                 index = newIndex;
 395                 newIndex = qMax(index - 1, 0);
 396             }
 397             m_keyboardAnchorIndex = index;
 398             m_keyboardAnchorPos = keyboardAnchorPos(index);
 399         } else {
 400             const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y();
 401             const qreal height = m_view->geometry().height();
 402
 403             // The new current item should be the first item in the current
 404             // column whose itemRect's top coordinate is larger than targetY.
 405             const qreal targetY = currentItemBottom - height;
 406
 407             updateKeyboardAnchor();
 408             int newIndex = previousRowIndex(index);
 409             do {
 410                 index = newIndex;
 411                 updateKeyboardAnchor();
 412                 newIndex = previousRowIndex(index);
 413             } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index);
 414         }
 415         break;
 416
 417     case Qt::Key_PageDown:
 418         if (horizontalScrolling) {
 419             // The new current index should correspond to the last item in the current column.
 420             int newIndex = qMin(index + 1, m_model->count() - 1);
 421             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) {
 422                 index = newIndex;
 423                 newIndex = qMin(index + 1, m_model->count() - 1);
 424             }
 425             m_keyboardAnchorIndex = index;
 426             m_keyboardAnchorPos = keyboardAnchorPos(index);
 427         } else {
 428             const qreal currentItemTop = m_view->itemRect(index).topLeft().y();
 429             const qreal height = m_view->geometry().height();
 430
 431             // The new current item should be the last item in the current
 432             // column whose itemRect's bottom coordinate is smaller than targetY.
 433             const qreal targetY = currentItemTop + height;
 434
 435             updateKeyboardAnchor();
 436             int newIndex = nextRowIndex(index);
 437             do {
 438                 index = newIndex;
 439                 updateKeyboardAnchor();
 440                 newIndex = nextRowIndex(index);
 441             } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index);
 442         }
 443         break;
 444
 445     case Qt::Key_Enter:
 446     case Qt::Key_Return: {
 447         const KItemSet selectedItems = m_selectionManager->selectedItems();
 448         if (selectedItems.count() >= 2) {
 449             Q_EMIT itemsActivated(selectedItems);
 450         } else if (selectedItems.count() == 1) {
 451             Q_EMIT itemActivated(selectedItems.first());
 452         } else {
 453             Q_EMIT itemActivated(index);
 454         }
 455         break;
 456     }
 457
 458     case Qt::Key_Escape:
 459         if (m_selectionMode) {
 460             Q_EMIT selectionModeChangeRequested(false);
 461         } else if (m_selectionBehavior != SingleSelection) {
 462             m_selectionManager->clearSelection();
 463         }
 464         m_keyboardManager->cancelSearch();
 465         Q_EMIT escapePressed();
 466         break;
 467
 468     case Qt::Key_Space:
 469         if (m_selectionBehavior == MultiSelection) {
 470             if (controlPressed) {
 471                 // Toggle the selection state of the current item.
 472                 m_selectionManager->endAnchoredSelection();
 473                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 474                 m_selectionManager->beginAnchoredSelection(index);
 475                 break;
 476             } else {
 477                 // Select the current item if it is not selected yet.
 478                 const int current = m_selectionManager->currentItem();
 479                 if (!m_selectionManager->isSelected(current)) {
 480                     m_selectionManager->setSelected(current);
 481                     break;
 482                 }
 483             }
 484         }
 485         Q_FALLTHROUGH(); // fall through to the default case and add the Space to the current search string.
 486     default:
 487         m_keyboardManager->addKeys(event->text());
 488         // Make sure unconsumed events get propagated up the chain. #302329
 489         event->ignore();
 490         return false;
 491     }
 492
 493     if (m_selectionManager->currentItem() != index) {
 494         switch (m_selectionBehavior) {
 495         case NoSelection:
 496             m_selectionManager->setCurrentItem(index);
 497             break;
 498
 499         case SingleSelection:
 500             m_selectionManager->setCurrentItem(index);
 501             m_selectionManager->clearSelection();
 502             m_selectionManager->setSelected(index, 1);
 503             break;
 504
 505         case MultiSelection:
 506             if (controlPressed) {
 507                 m_selectionManager->endAnchoredSelection();
 508             }
 509
 510             m_selectionManager->setCurrentItem(index);
 511
 512             if (!shiftOrControlPressed) {
 513                 m_selectionManager->clearSelection();
 514                 m_selectionManager->setSelected(index, 1);
 515             }
 516
 517             if (!shiftPressed) {
 518                 m_selectionManager->beginAnchoredSelection(index);
 519             }
 520             break;
 521         }
 522     }
 523
 524     if (navigationPressed) {
 525         m_view->scrollToItem(index);
 526     }
 527     return true;
 528 }
 529
 530 void KItemListController::slotChangeCurrentItem(const QString &text, bool searchFromNextItem)
 531 {
 532     if (!m_model || m_model->count() == 0) {
 533         return;
 534     }
 535     int index;
 536     if (searchFromNextItem) {
 537         const int currentIndex = m_selectionManager->currentItem();
 538         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 539     } else {
 540         index = m_model->indexForKeyboardSearch(text, 0);
 541     }
 542     if (index >= 0) {
 543         m_selectionManager->setCurrentItem(index);
 544
 545         if (m_selectionBehavior != NoSelection) {
 546             m_selectionManager->replaceSelection(index);
 547             m_selectionManager->beginAnchoredSelection(index);
 548         }
 549
 550         m_view->scrollToItem(index, KItemListView::ViewItemPosition::Beginning);
 551     }
 552 }
 553
 554 void KItemListController::slotAutoActivationTimeout()
 555 {
 556     if (!m_model || !m_view) {
 557         return;
 558     }
 559
 560     const int index = m_autoActivationTimer->property("index").toInt();
 561     if (index < 0 || index >= m_model->count()) {
 562         return;
 563     }
 564
 565     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 566      * Places-Panel.
 567      *
 568      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 569      * then move away before the auto-activation timeout triggers, than the
 570      * item still becomes activated/expanded.
 571      *
 572      * See Bug 293200 and 305783
 573      */
 574     if (m_view->isUnderMouse()) {
 575         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 576             const bool expanded = m_model->isExpanded(index);
 577             m_model->setExpanded(index, !expanded);
 578         } else if (m_autoActivationBehavior != ExpansionOnly) {
 579             Q_EMIT itemActivated(index);
 580         }
 581     }
 582 }
 583
 584 bool KItemListController::inputMethodEvent(QInputMethodEvent *event)
 585 {
 586     Q_UNUSED(event)
 587     return false;
 588 }
 589
 590 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 591 {
 592     m_mousePress = true;
 593     m_pressedMouseGlobalPos = event->screenPos();
 594
 595     if (event->source() == Qt::MouseEventSynthesizedByQt && m_isTouchEvent) {
 596         return false;
 597     }
 598
 599     if (!m_view) {
 600         return false;
 601     }
 602
 603     const QPointF pressedMousePos = transform.map(event->pos());
 604     m_pressedIndex = m_view->itemAt(pressedMousePos);
 605
 606     const Qt::MouseButtons buttons = event->buttons();
 607
 608     if (!onPress(event->pos(), event->modifiers(), buttons)) {
 609         startRubberBand();
 610         return false;
 611     }
 612
 613     return true;
 614 }
 615
 616 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 617 {
 618     if (!m_view) {
 619         return false;
 620     }
 621
 622     if (m_view->m_tapAndHoldIndicator->isActive()) {
 623         m_view->m_tapAndHoldIndicator->setActive(false);
 624     }
 625
 626     if (event->source() == Qt::MouseEventSynthesizedByQt && !m_dragActionOrRightClick && m_isTouchEvent) {
 627         return false;
 628     }
 629
 630     if (m_pressedIndex.has_value() && !m_view->rubberBand()->isActive()) {
 631         // Check whether a dragging should be started
 632         if (event->buttons() & Qt::LeftButton) {
 633             const auto distance = (event->screenPos() - m_pressedMouseGlobalPos).manhattanLength();
 634             if (distance >= QApplication::startDragDistance()) {
 635                 if (!m_selectionManager->isSelected(m_pressedIndex.value())) {
 636                     // Always assure that the dragged item gets selected. Usually this is already
 637                     // done on the mouse-press event, but when using the selection-toggle on a
 638                     // selected item the dragged item is not selected yet.
 639                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
 640                 } else {
 641                     // A selected item has been clicked to drag all selected items
 642                     // -> the selection should not be cleared when the mouse button is released.
 643                     m_clearSelectionIfItemsAreNotDragged = false;
 644                 }
 645                 startDragging();
 646                 m_mousePress = false;
 647             }
 648         }
 649     } else {
 650         KItemListRubberBand *rubberBand = m_view->rubberBand();
 651         if (rubberBand->isActive()) {
 652             QPointF endPos = transform.map(event->pos());
 653
 654             // Update the current item.
 655             const std::optional<int> newCurrent = m_view->itemAt(endPos);
 656             if (newCurrent.has_value()) {
 657                 // It's expected that the new current index is also the new anchor (bug 163451).
 658                 m_selectionManager->endAnchoredSelection();
 659                 m_selectionManager->setCurrentItem(newCurrent.value());
 660                 m_selectionManager->beginAnchoredSelection(newCurrent.value());
 661             }
 662
 663             if (m_view->scrollOrientation() == Qt::Vertical) {
 664                 endPos.ry() += m_view->scrollOffset();
 665             } else {
 666                 endPos.rx() += m_view->scrollOffset();
 667             }
 668             rubberBand->setEndPosition(endPos);
 669         }
 670     }
 671
 672     return false;
 673 }
 674
 675 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 676 {
 677     m_mousePress = false;
 678     m_isTouchEvent = false;
 679
 680     if (!m_view) {
 681         return false;
 682     }
 683
 684     if (m_view->m_tapAndHoldIndicator->isActive()) {
 685         m_view->m_tapAndHoldIndicator->setActive(false);
 686     }
 687
 688     KItemListRubberBand *rubberBand = m_view->rubberBand();
 689     if (event->source() == Qt::MouseEventSynthesizedByQt && !rubberBand->isActive() && m_isTouchEvent) {
 690         return false;
 691     }
 692
 693     Q_EMIT mouseButtonReleased(m_pressedIndex.value_or(-1), event->buttons());
 694
 695     return onRelease(transform.map(event->pos()), event->modifiers(), event->button(), false);
 696 }
 697
 698 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 699 {
 700     const QPointF pos = transform.map(event->pos());
 701     const std::optional<int> index = m_view->itemAt(pos);
 702
 703     if (!index.has_value()) {
 704         Q_EMIT doubleClickViewBackground(event->button());
 705         return false;
 706     }
 707
 708     // Expand item if desired - See Bug 295573
 709     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 710         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index.value_or(-1))) {
 711             const bool expanded = m_model->isExpanded(index.value());
 712             m_model->setExpanded(index.value(), !expanded);
 713         }
 714     }
 715
 716     if (event->button() & Qt::RightButton) {
 717         return false;
 718     }
 719
 720     if (m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced) {
 721         return false;
 722     }
 723
 724     const bool emitItemActivated = index.has_value() && index.value() < m_model->count() && !m_view->isAboveExpansionToggle(index.value(), pos);
 725     if (emitItemActivated) {
 726         Q_EMIT itemActivated(index.value());
 727     }
 728     return false;
 729 }
 730
 731 bool KItemListController::contextMenuEvent(QContextMenuEvent *event)
 732 {
 733     if (event->reason() == QContextMenuEvent::Keyboard) {
 734         // Emit the signal itemContextMenuRequested() if at least one item is selected.
 735         // Otherwise the signal viewContextMenuRequested() will be emitted.
 736         const KItemSet selectedItems = m_selectionManager->selectedItems();
 737         int index = -1;
 738         if (selectedItems.count() >= 2) {
 739             const int currentItemIndex = m_selectionManager->currentItem();
 740             index = selectedItems.contains(currentItemIndex) ? currentItemIndex : selectedItems.first();
 741         } else if (selectedItems.count() == 1) {
 742             index = selectedItems.first();
 743         }
 744
 745         if (index >= 0) {
 746             const QRectF contextRect = m_view->itemContextRect(index);
 747             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 748             Q_EMIT itemContextMenuRequested(index, pos);
 749         } else {
 750             Q_EMIT viewContextMenuRequested(event->globalPos());
 751         }
 752         return true;
 753     }
 754
 755     const auto pos = event->pos();
 756     const auto globalPos = event->globalPos();
 757
 758     if (m_view->headerBoundaries().contains(pos)) {
 759         Q_EMIT headerContextMenuRequested(globalPos);
 760         return true;
 761     }
 762
 763     const auto pressedItem = m_view->itemAt(pos);
 764     // We only open a context menu for the pressed item if it is selected.
 765     // That's because the same click might have de-selected the item or because the press was only in the row of the item but not on it.
 766     if (pressedItem && m_selectionManager->selectedItems().contains(pressedItem.value())) {
 767         // The selection rectangle for an item was clicked
 768         Q_EMIT itemContextMenuRequested(pressedItem.value(), globalPos);
 769         return true;
 770     }
 771
 772     // Remove any hover highlights so the context menu doesn't look like it applies to a row.
 773     const auto widgets = m_view->visibleItemListWidgets();
 774     for (KItemListWidget *widget : widgets) {
 775         if (widget->isHovered()) {
 776             widget->setHovered(false);
 777             Q_EMIT itemUnhovered(widget->index());
 778         }
 779     }
 780     Q_EMIT viewContextMenuRequested(globalPos);
 781     return true;
 782 }
 783
 784 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 785 {
 786     Q_UNUSED(event)
 787     Q_UNUSED(transform)
 788
 789     DragAndDropHelper::clearUrlListMatchesUrlCache();
 790
 791     return false;
 792 }
 793
 794 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 795 {
 796     Q_UNUSED(event)
 797     Q_UNUSED(transform)
 798
 799     m_autoActivationTimer->stop();
 800     m_view->setAutoScroll(false);
 801     m_view->hideDropIndicator();
 802
 803     KItemListWidget *widget = hoveredWidget();
 804     if (widget) {
 805         widget->setHovered(false);
 806         Q_EMIT itemUnhovered(widget->index());
 807     }
 808     return false;
 809 }
 810
 811 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 812 {
 813     if (!m_model || !m_view) {
 814         return false;
 815     }
 816
 817     QUrl hoveredDir = m_model->directory();
 818     KItemListWidget *oldHoveredWidget = hoveredWidget();
 819
 820     const QPointF pos = transform.map(event->pos());
 821     KItemListWidget *newHoveredWidget = widgetForDropPos(pos);
 822     int index = -1;
 823
 824     if (oldHoveredWidget != newHoveredWidget) {
 825         m_autoActivationTimer->stop();
 826
 827         if (oldHoveredWidget) {
 828             oldHoveredWidget->setHovered(false);
 829             Q_EMIT itemUnhovered(oldHoveredWidget->index());
 830         }
 831     }
 832
 833     if (newHoveredWidget) {
 834         bool droppingBetweenItems = false;
 835         if (m_model->sortRole().isEmpty()) {
 836             // The model supports inserting items between other items.
 837             droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 838         }
 839
 840         index = newHoveredWidget->index();
 841
 842         if (m_model->isDir(index)) {
 843             hoveredDir = m_model->url(index);
 844         }
 845
 846         if (!droppingBetweenItems) {
 847             // Something has been dragged on an item.
 848             m_view->hideDropIndicator();
 849             if (!newHoveredWidget->isHovered()) {
 850                 newHoveredWidget->setHovered(true);
 851                 Q_EMIT itemHovered(index);
 852             }
 853
 854             if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0 && m_model->canEnterOnHover(index)) {
 855                 m_autoActivationTimer->setProperty("index", index);
 856                 m_autoActivationTimer->start();
 857                 newHoveredWidget->startActivateSoonAnimation(m_autoActivationTimer->remainingTime());
 858             }
 859
 860         } else {
 861             m_autoActivationTimer->stop();
 862             if (newHoveredWidget && newHoveredWidget->isHovered()) {
 863                 newHoveredWidget->setHovered(false);
 864                 Q_EMIT itemUnhovered(index);
 865             }
 866         }
 867     } else {
 868         m_view->hideDropIndicator();
 869     }
 870
 871     if (DragAndDropHelper::urlListMatchesUrl(event->mimeData()->urls(), hoveredDir)) {
 872         event->setDropAction(Qt::IgnoreAction);
 873         event->ignore();
 874     } else {
 875         if (m_model->supportsDropping(index)) {
 876             event->setDropAction(event->proposedAction());
 877             event->accept();
 878         } else {
 879             event->setDropAction(Qt::IgnoreAction);
 880             event->ignore();
 881         }
 882     }
 883     return false;
 884 }
 885
 886 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 887 {
 888     if (!m_view) {
 889         return false;
 890     }
 891
 892     m_autoActivationTimer->stop();
 893     m_view->setAutoScroll(false);
 894
 895     const QPointF pos = transform.map(event->pos());
 896
 897     int dropAboveIndex = -1;
 898     if (m_model->sortRole().isEmpty()) {
 899         // The model supports inserting of items between other items.
 900         dropAboveIndex = m_view->showDropIndicator(pos);
 901     }
 902
 903     if (dropAboveIndex >= 0) {
 904         // Something has been dropped between two items.
 905         m_view->hideDropIndicator();
 906         Q_EMIT aboveItemDropEvent(dropAboveIndex, event);
 907     } else if (!event->mimeData()->hasFormat(m_model->blacklistItemDropEventMimeType())) {
 908         // Something has been dropped on an item or on an empty part of the view.
 909         const KItemListWidget *receivingWidget = widgetForDropPos(pos);
 910         if (receivingWidget) {
 911             Q_EMIT itemDropEvent(receivingWidget->index(), event);
 912         } else {
 913             Q_EMIT itemDropEvent(-1, event);
 914         }
 915     }
 916
 917     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropEnd);
 918     QAccessible::updateAccessibility(&accessibilityEvent);
 919
 920     return true;
 921 }
 922
 923 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 924 {
 925     Q_UNUSED(event)
 926     Q_UNUSED(transform)
 927     return false;
 928 }
 929
 930 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 931 {
 932     Q_UNUSED(transform)
 933     if (!m_model || !m_view) {
 934         return false;
 935     }
 936
 937     // We identify the widget whose expansionArea had been hovered before this hoverMoveEvent() triggered.
 938     // we can't use hoveredWidget() here (it handles the icon+text rect, not the expansion rect)
 939     // like hoveredWidget(), we find the hovered widget for the expansion rect
 940     const auto visibleItemListWidgets = m_view->visibleItemListWidgets();
 941     const auto oldHoveredExpansionWidgetIterator = std::find_if(visibleItemListWidgets.begin(), visibleItemListWidgets.end(), [](auto &widget) {
 942         return widget->expansionAreaHovered();
 943     });
 944     const auto oldHoveredExpansionWidget =
 945         oldHoveredExpansionWidgetIterator == visibleItemListWidgets.end() ? std::nullopt : std::make_optional(*oldHoveredExpansionWidgetIterator);
 946
 947     const auto unhoverOldHoveredWidget = [&]() {
 948         if (auto oldHoveredWidget = hoveredWidget(); oldHoveredWidget) {
 949             // handle the text+icon one
 950             oldHoveredWidget->setHovered(false);
 951             Q_EMIT itemUnhovered(oldHoveredWidget->index());
 952         }
 953     };
 954
 955     const auto unhoverOldExpansionWidget = [&]() {
 956         if (oldHoveredExpansionWidget) {
 957             // then the expansion toggle
 958             (*oldHoveredExpansionWidget)->setExpansionAreaHovered(false);
 959         }
 960     };
 961
 962     const QPointF pos = transform.map(event->pos());
 963     if (KItemListWidget *newHoveredWidget = widgetForPos(pos); newHoveredWidget) {
 964         // something got hovered, work out which part and set hover for the appropriate widget
 965         const auto mappedPos = newHoveredWidget->mapFromItem(m_view, pos);
 966         const bool isOnExpansionToggle = newHoveredWidget->expansionToggleRect().contains(mappedPos);
 967
 968         if (isOnExpansionToggle) {
 969             // make sure we unhover the old one first if old!=new
 970             if (oldHoveredExpansionWidget && *oldHoveredExpansionWidget != newHoveredWidget) {
 971                 (*oldHoveredExpansionWidget)->setExpansionAreaHovered(false);
 972             }
 973             // we also unhover any old icon+text hovers, in case the mouse movement from icon+text to expansion toggle is too fast (i.e. newHoveredWidget is never null between the transition)
 974             unhoverOldHoveredWidget();
 975
 976             newHoveredWidget->setExpansionAreaHovered(true);
 977         } else {
 978             // make sure we unhover the old one first if old!=new
 979             auto oldHoveredWidget = hoveredWidget();
 980             if (oldHoveredWidget && oldHoveredWidget != newHoveredWidget) {
 981                 oldHoveredWidget->setHovered(false);
 982                 Q_EMIT itemUnhovered(oldHoveredWidget->index());
 983             }
 984             // we also unhover any old expansion toggle hovers, in case the mouse movement from expansion toggle to icon+text is too fast (i.e. newHoveredWidget is never null between the transition)
 985             unhoverOldExpansionWidget();
 986
 987             const bool isOverIconAndText = newHoveredWidget->iconRect().contains(mappedPos) || newHoveredWidget->textRect().contains(mappedPos);
 988             const bool hasMultipleSelection = m_selectionManager->selectedItems().count() > 1;
 989
 990             if (hasMultipleSelection && !isOverIconAndText) {
 991                 // In case we have multiple selections, clicking on any row will deselect the selection.
 992                 // So, as a visual cue for signalling that clicking anywhere won't select, but clear current highlights,
 993                 // we disable hover of the *row*(i.e. blank space to the right of the icon+text)
 994
 995                 // (no-op in this branch for masked hover)
 996             } else {
 997                 newHoveredWidget->setHoverPosition(mappedPos);
 998                 if (oldHoveredWidget != newHoveredWidget) {
 999                     newHoveredWidget->setHovered(true);
1000                     Q_EMIT itemHovered(newHoveredWidget->index());
1001                 }
1002             }
1003         }
1004     } else {
1005         // unhover any currently hovered expansion and text+icon widgets
1006         unhoverOldHoveredWidget();
1007         unhoverOldExpansionWidget();
1008     }
1009     return false;
1010 }
1011
1012 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
1013 {
1014     Q_UNUSED(event)
1015     Q_UNUSED(transform)
1016
1017     m_mousePress = false;
1018     m_isTouchEvent = false;
1019
1020     if (!m_model || !m_view) {
1021         return false;
1022     }
1023
1024     const auto widgets = m_view->visibleItemListWidgets();
1025     for (KItemListWidget *widget : widgets) {
1026         if (widget->isHovered()) {
1027             widget->setHovered(false);
1028             Q_EMIT itemUnhovered(widget->index());
1029         }
1030     }
1031     return false;
1032 }
1033
1034 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent *event, const QTransform &transform)
1035 {
1036     Q_UNUSED(event)
1037     Q_UNUSED(transform)
1038     return false;
1039 }
1040
1041 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent *event, const QTransform &transform)
1042 {
1043     Q_UNUSED(event)
1044     Q_UNUSED(transform)
1045     return false;
1046 }
1047
1048 bool KItemListController::gestureEvent(QGestureEvent *event, const QTransform &transform)
1049 {
1050     if (!m_view) {
1051         return false;
1052     }
1053
1054     //you can touch on different views at the same time, but only one QWidget gets a mousePressEvent
1055     //we use this to get the right QWidget
1056     //the only exception is a tap gesture with state GestureStarted, we need to reset some variable
1057     if (!m_mousePress) {
1058         if (QGesture *tap = event->gesture(Qt::TapGesture)) {
1059             QTapGesture *tapGesture = static_cast<QTapGesture *>(tap);
1060             if (tapGesture->state() == Qt::GestureStarted) {
1061                 tapTriggered(tapGesture, transform);
1062             }
1063         }
1064         return false;
1065     }
1066
1067     bool accepted = false;
1068
1069     if (QGesture *tap = event->gesture(Qt::TapGesture)) {
1070         tapTriggered(static_cast<QTapGesture *>(tap), transform);
1071         accepted = true;
1072     }
1073     if (event->gesture(Qt::TapAndHoldGesture)) {
1074         tapAndHoldTriggered(event, transform);
1075         accepted = true;
1076     }
1077     if (event->gesture(Qt::PinchGesture)) {
1078         pinchTriggered(event, transform);
1079         accepted = true;
1080     }
1081     if (event->gesture(m_swipeGesture)) {
1082         swipeTriggered(event, transform);
1083         accepted = true;
1084     }
1085     if (event->gesture(m_twoFingerTapGesture)) {
1086         twoFingerTapTriggered(event, transform);
1087         accepted = true;
1088     }
1089     return accepted;
1090 }
1091
1092 bool KItemListController::touchBeginEvent(QTouchEvent *event, const QTransform &transform)
1093 {
1094     Q_UNUSED(event)
1095     Q_UNUSED(transform)
1096
1097     m_isTouchEvent = true;
1098     return false;
1099 }
1100
1101 void KItemListController::tapTriggered(QTapGesture *tap, const QTransform &transform)
1102 {
1103     static bool scrollerWasActive = false;
1104
1105     if (tap->state() == Qt::GestureStarted) {
1106         m_dragActionOrRightClick = false;
1107         m_isSwipeGesture = false;
1108         m_pinchGestureInProgress = false;
1109         scrollerWasActive = m_scrollerIsScrolling;
1110     }
1111
1112     if (tap->state() == Qt::GestureFinished) {
1113         m_mousePress = false;
1114
1115         //if at the moment of the gesture start the QScroller was active, the user made the tap
1116         //to stop the QScroller and not to tap on an item
1117         if (scrollerWasActive) {
1118             return;
1119         }
1120
1121         if (m_view->m_tapAndHoldIndicator->isActive()) {
1122             m_view->m_tapAndHoldIndicator->setActive(false);
1123         }
1124
1125         const QPointF pressedMousePos = transform.map(tap->position());
1126         m_pressedIndex = m_view->itemAt(pressedMousePos);
1127         if (m_dragActionOrRightClick) {
1128             m_dragActionOrRightClick = false;
1129         } else {
1130             onPress(tap->position().toPoint(), Qt::NoModifier, Qt::LeftButton);
1131             onRelease(transform.map(tap->position()), Qt::NoModifier, Qt::LeftButton, true);
1132         }
1133         m_isTouchEvent = false;
1134     }
1135 }
1136
1137 void KItemListController::tapAndHoldTriggered(QGestureEvent *event, const QTransform &transform)
1138 {
1139     //the Qt TabAndHold gesture is triggerable with a mouse click, we don't want this
1140     if (!m_isTouchEvent) {
1141         return;
1142     }
1143
1144     const QTapAndHoldGesture *tap = static_cast<QTapAndHoldGesture *>(event->gesture(Qt::TapAndHoldGesture));
1145     if (tap->state() == Qt::GestureFinished) {
1146         //if a pinch gesture is in progress we don't want a TabAndHold gesture
1147         if (m_pinchGestureInProgress) {
1148             return;
1149         }
1150         const QPointF pressedMousePos = transform.map(event->mapToGraphicsScene(tap->position()));
1151         m_pressedIndex = m_view->itemAt(pressedMousePos);
1152         if (m_pressedIndex.has_value()) {
1153             if (!m_selectionManager->isSelected(m_pressedIndex.value())) {
1154                 m_selectionManager->clearSelection();
1155                 m_selectionManager->setSelected(m_pressedIndex.value());
1156             }
1157             if (!m_selectionMode) {
1158                 Q_EMIT selectionModeChangeRequested(true);
1159             }
1160         } else {
1161             m_selectionManager->clearSelection();
1162             startRubberBand();
1163         }
1164
1165         Q_EMIT scrollerStop();
1166
1167         m_view->m_tapAndHoldIndicator->setStartPosition(pressedMousePos);
1168         m_view->m_tapAndHoldIndicator->setActive(true);
1169
1170         m_dragActionOrRightClick = true;
1171     }
1172 }
1173
1174 void KItemListController::pinchTriggered(QGestureEvent *event, const QTransform &transform)
1175 {
1176     Q_UNUSED(transform)
1177
1178     const QPinchGesture *pinch = static_cast<QPinchGesture *>(event->gesture(Qt::PinchGesture));
1179     const qreal sensitivityModifier = 0.2;
1180     static qreal counter = 0;
1181
1182     if (pinch->state() == Qt::GestureStarted) {
1183         m_pinchGestureInProgress = true;
1184         counter = 0;
1185     }
1186     if (pinch->state() == Qt::GestureUpdated) {
1187         //if a swipe gesture was recognized or in progress, we don't want a pinch gesture to change the zoom
1188         if (m_isSwipeGesture) {
1189             return;
1190         }
1191         counter = counter + (pinch->scaleFactor() - 1);
1192         if (counter >= sensitivityModifier) {
1193             Q_EMIT increaseZoom();
1194             counter = 0;
1195         } else if (counter <= -sensitivityModifier) {
1196             Q_EMIT decreaseZoom();
1197             counter = 0;
1198         }
1199     }
1200 }
1201
1202 void KItemListController::swipeTriggered(QGestureEvent *event, const QTransform &transform)
1203 {
1204     Q_UNUSED(transform)
1205
1206     const KTwoFingerSwipe *swipe = static_cast<KTwoFingerSwipe *>(event->gesture(m_swipeGesture));
1207
1208     if (!swipe) {
1209         return;
1210     }
1211     if (swipe->state() == Qt::GestureStarted) {
1212         m_isSwipeGesture = true;
1213     }
1214
1215     if (swipe->state() == Qt::GestureCanceled) {
1216         m_isSwipeGesture = false;
1217     }
1218
1219     if (swipe->state() == Qt::GestureFinished) {
1220         Q_EMIT scrollerStop();
1221
1222         if (swipe->swipeAngle() <= 20 || swipe->swipeAngle() >= 340) {
1223             Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), Qt::BackButton);
1224         } else if (swipe->swipeAngle() <= 200 && swipe->swipeAngle() >= 160) {
1225             Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), Qt::ForwardButton);
1226         } else if (swipe->swipeAngle() <= 110 && swipe->swipeAngle() >= 60) {
1227             Q_EMIT swipeUp();
1228         }
1229         m_isSwipeGesture = true;
1230     }
1231 }
1232
1233 void KItemListController::twoFingerTapTriggered(QGestureEvent *event, const QTransform &transform)
1234 {
1235     const KTwoFingerTap *twoTap = static_cast<KTwoFingerTap *>(event->gesture(m_twoFingerTapGesture));
1236
1237     if (!twoTap) {
1238         return;
1239     }
1240
1241     if (twoTap->state() == Qt::GestureStarted) {
1242         const QPointF pressedMousePos = transform.map(twoTap->pos());
1243         m_pressedIndex = m_view->itemAt(pressedMousePos);
1244         if (m_pressedIndex.has_value()) {
1245             onPress(twoTap->pos().toPoint(), Qt::ControlModifier, Qt::LeftButton);
1246             onRelease(transform.map(twoTap->pos()), Qt::ControlModifier, Qt::LeftButton, false);
1247         }
1248     }
1249 }
1250
1251 bool KItemListController::processEvent(QEvent *event, const QTransform &transform)
1252 {
1253     if (!event) {
1254         return false;
1255     }
1256
1257     switch (event->type()) {
1258     case QEvent::KeyPress:
1259         return keyPressEvent(static_cast<QKeyEvent *>(event));
1260     case QEvent::InputMethod:
1261         return inputMethodEvent(static_cast<QInputMethodEvent *>(event));
1262     case QEvent::GraphicsSceneMousePress:
1263         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1264     case QEvent::GraphicsSceneMouseMove:
1265         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1266     case QEvent::GraphicsSceneMouseRelease:
1267         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1268     case QEvent::GraphicsSceneMouseDoubleClick:
1269         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1270     case QEvent::ContextMenu:
1271         return contextMenuEvent(static_cast<QContextMenuEvent *>(event));
1272     case QEvent::GraphicsSceneWheel:
1273         return wheelEvent(static_cast<QGraphicsSceneWheelEvent *>(event), QTransform());
1274     case QEvent::GraphicsSceneDragEnter:
1275         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1276     case QEvent::GraphicsSceneDragLeave:
1277         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1278     case QEvent::GraphicsSceneDragMove:
1279         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1280     case QEvent::GraphicsSceneDrop:
1281         return dropEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1282     case QEvent::GraphicsSceneHoverEnter:
1283         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1284     case QEvent::GraphicsSceneHoverMove:
1285         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1286     case QEvent::GraphicsSceneHoverLeave:
1287         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1288     case QEvent::GraphicsSceneResize:
1289         return resizeEvent(static_cast<QGraphicsSceneResizeEvent *>(event), transform);
1290     case QEvent::Gesture:
1291         return gestureEvent(static_cast<QGestureEvent *>(event), transform);
1292     case QEvent::TouchBegin:
1293         return touchBeginEvent(static_cast<QTouchEvent *>(event), transform);
1294     default:
1295         break;
1296     }
1297
1298     return false;
1299 }
1300
1301 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1302 {
1303     if (!m_view) {
1304         return;
1305     }
1306
1307     KItemListRubberBand *rubberBand = m_view->rubberBand();
1308     if (rubberBand->isActive()) {
1309         const qreal diff = current - previous;
1310         // TODO: Ideally just QCursor::pos() should be used as
1311         // new end-position but it seems there is no easy way
1312         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1313         // (... or I just missed an easy way to do the mapping)
1314         QPointF endPos = rubberBand->endPosition();
1315         if (m_view->scrollOrientation() == Qt::Vertical) {
1316             endPos.ry() += diff;
1317         } else {
1318             endPos.rx() += diff;
1319         }
1320
1321         rubberBand->setEndPosition(endPos);
1322     }
1323 }
1324
1325 void KItemListController::slotRubberBandChanged()
1326 {
1327     if (!m_view || !m_model || m_model->count() <= 0) {
1328         return;
1329     }
1330
1331     const KItemListRubberBand *rubberBand = m_view->rubberBand();
1332     const QPointF startPos = rubberBand->startPosition();
1333     const QPointF endPos = rubberBand->endPosition();
1334     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1335
1336     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1337     if (scrollVertical) {
1338         rubberBandRect.translate(0, -m_view->scrollOffset());
1339     } else {
1340         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1341     }
1342
1343     if (!m_oldSelection.isEmpty()) {
1344         // Clear the old selection that was available before the rubberband has
1345         // been activated in case if no Shift- or Control-key are pressed
1346         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier || QApplication::keyboardModifiers() & Qt::ControlModifier;
1347         if (!shiftOrControlPressed && !m_selectionMode) {
1348             m_oldSelection.clear();
1349         }
1350     }
1351
1352     KItemSet selectedItems;
1353
1354     // Select all visible items that intersect with the rubberband
1355     const auto widgets = m_view->visibleItemListWidgets();
1356     for (const KItemListWidget *widget : widgets) {
1357         const int index = widget->index();
1358
1359         const QRectF widgetRect = m_view->itemRect(index);
1360         if (widgetRect.intersects(rubberBandRect)) {
1361             // Select the full row intersecting with the rubberband rectangle
1362             const QRectF selectionRect = widget->selectionRect().translated(widgetRect.topLeft());
1363             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1364             if (selectionRect.intersects(rubberBandRect) || iconRect.intersects(rubberBandRect)) {
1365                 selectedItems.insert(index);
1366             }
1367         }
1368     }
1369
1370     // Select all invisible items that intersect with the rubberband. Instead of
1371     // iterating all items only the area which might be touched by the rubberband
1372     // will be checked.
1373     const bool increaseIndex = scrollVertical ? startPos.y() > endPos.y() : startPos.x() > endPos.x();
1374
1375     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1376     bool selectionFinished = false;
1377     do {
1378         const QRectF widgetRect = m_view->itemRect(index);
1379         if (widgetRect.intersects(rubberBandRect)) {
1380             selectedItems.insert(index);
1381         }
1382
1383         if (increaseIndex) {
1384             ++index;
1385             selectionFinished = (index >= m_model->count()) || (scrollVertical && widgetRect.top() > rubberBandRect.bottom())
1386                 || (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1387         } else {
1388             --index;
1389             selectionFinished = (index < 0) || (scrollVertical && widgetRect.bottom() < rubberBandRect.top())
1390                 || (!scrollVertical && widgetRect.right() < rubberBandRect.left());
1391         }
1392     } while (!selectionFinished);
1393
1394     if ((QApplication::keyboardModifiers() & Qt::ControlModifier) || m_selectionMode) {
1395         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1396         // Therefore, the new selection contains:
1397         // 1. All previously selected items which are not inside the rubberband, and
1398         // 2. all items inside the rubberband which have not been selected previously.
1399         m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems);
1400     } else {
1401         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1402     }
1403 }
1404
1405 void KItemListController::startDragging()
1406 {
1407     if (!m_view || !m_model) {
1408         return;
1409     }
1410
1411     const KItemSet selectedItems = m_selectionManager->selectedItems();
1412     if (selectedItems.isEmpty()) {
1413         return;
1414     }
1415
1416     QMimeData *data = m_model->createMimeData(selectedItems);
1417     if (!data) {
1418         return;
1419     }
1420     KUrlMimeData::exportUrlsToPortal(data);
1421
1422     // The created drag object will be owned and deleted
1423     // by QApplication::activeWindow().
1424     QDrag *drag = new QDrag(QApplication::activeWindow());
1425     drag->setMimeData(data);
1426
1427     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1428     drag->setPixmap(pixmap);
1429
1430     const QPoint hotSpot((pixmap.width() / pixmap.devicePixelRatio()) / 2, 0);
1431     drag->setHotSpot(hotSpot);
1432
1433     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1434
1435     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropStart);
1436     QAccessible::updateAccessibility(&accessibilityEvent);
1437 }
1438
1439 KItemListWidget *KItemListController::hoveredWidget() const
1440 {
1441     Q_ASSERT(m_view);
1442
1443     const auto widgets = m_view->visibleItemListWidgets();
1444     for (KItemListWidget *widget : widgets) {
1445         if (widget->isHovered()) {
1446             return widget;
1447         }
1448     }
1449
1450     return nullptr;
1451 }
1452
1453 KItemListWidget *KItemListController::widgetForPos(const QPointF &pos) const
1454 {
1455     Q_ASSERT(m_view);
1456
1457     if (m_view->headerBoundaries().contains(pos)) {
1458         return nullptr;
1459     }
1460
1461     const auto widgets = m_view->visibleItemListWidgets();
1462     for (KItemListWidget *widget : widgets) {
1463         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1464         if (widget->contains(mappedPos) || widget->selectionRect().contains(mappedPos)) {
1465             return widget;
1466         }
1467     }
1468
1469     return nullptr;
1470 }
1471
1472 KItemListWidget *KItemListController::widgetForDropPos(const QPointF &pos) const
1473 {
1474     Q_ASSERT(m_view);
1475
1476     if (m_view->headerBoundaries().contains(pos)) {
1477         return nullptr;
1478     }
1479
1480     const auto widgets = m_view->visibleItemListWidgets();
1481     for (KItemListWidget *widget : widgets) {
1482         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1483         if (widget->contains(mappedPos)) {
1484             return widget;
1485         }
1486     }
1487
1488     return nullptr;
1489 }
1490
1491 void KItemListController::updateKeyboardAnchor()
1492 {
1493     const bool validAnchor =
1494         m_keyboardAnchorIndex >= 0 && m_keyboardAnchorIndex < m_model->count() && keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1495     if (!validAnchor) {
1496         const int index = m_selectionManager->currentItem();
1497         m_keyboardAnchorIndex = index;
1498         m_keyboardAnchorPos = keyboardAnchorPos(index);
1499     }
1500 }
1501
1502 int KItemListController::nextRowIndex(int index) const
1503 {
1504     if (m_keyboardAnchorIndex < 0) {
1505         return index;
1506     }
1507
1508     const int maxIndex = m_model->count() - 1;
1509     if (index == maxIndex) {
1510         return index;
1511     }
1512
1513     const bool reversed = m_view->layoutDirection() == Qt::RightToLeft && m_view->scrollOrientation() == Qt::Vertical;
1514
1515     // Calculate the index of the last column inside the row of the current index
1516     int lastColumnIndex = index;
1517     while ((!reversed && keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex))
1518            || (reversed && keyboardAnchorPos(lastColumnIndex + 1) < keyboardAnchorPos(lastColumnIndex))) {
1519         ++lastColumnIndex;
1520         if (lastColumnIndex >= maxIndex) {
1521             return index;
1522         }
1523     }
1524
1525     // Based on the last column index go to the next row and calculate the nearest index
1526     // that is below the current index
1527     int nextRowIndex = lastColumnIndex + 1;
1528     int searchIndex = nextRowIndex;
1529     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1530     while (searchIndex < maxIndex
1531            && ((!reversed && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex))
1532                || (reversed && keyboardAnchorPos(searchIndex + 1) < keyboardAnchorPos(searchIndex)))) {
1533         ++searchIndex;
1534         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1535         if (searchDiff < minDiff) {
1536             minDiff = searchDiff;
1537             nextRowIndex = searchIndex;
1538         }
1539     }
1540
1541     return nextRowIndex;
1542 }
1543
1544 int KItemListController::previousRowIndex(int index) const
1545 {
1546     if (m_keyboardAnchorIndex < 0 || index == 0) {
1547         return index;
1548     }
1549
1550     const bool reversed = m_view->layoutDirection() == Qt::RightToLeft && m_view->scrollOrientation() == Qt::Vertical;
1551
1552     // Calculate the index of the first column inside the row of the current index
1553     int firstColumnIndex = index;
1554     while ((!reversed && keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex))
1555            || (reversed && keyboardAnchorPos(firstColumnIndex - 1) > keyboardAnchorPos(firstColumnIndex))) {
1556         --firstColumnIndex;
1557         if (firstColumnIndex <= 0) {
1558             return index;
1559         }
1560     }
1561
1562     // Based on the first column index go to the previous row and calculate the nearest index
1563     // that is above the current index
1564     int previousRowIndex = firstColumnIndex - 1;
1565     int searchIndex = previousRowIndex;
1566     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1567     while (searchIndex > 0
1568            && ((!reversed && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex))
1569                || (reversed && keyboardAnchorPos(searchIndex - 1) > keyboardAnchorPos(searchIndex)))) {
1570         --searchIndex;
1571         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1572         if (searchDiff < minDiff) {
1573             minDiff = searchDiff;
1574             previousRowIndex = searchIndex;
1575         }
1576     }
1577
1578     return previousRowIndex;
1579 }
1580
1581 qreal KItemListController::keyboardAnchorPos(int index) const
1582 {
1583     const QRectF itemRect = m_view->itemRect(index);
1584     if (!itemRect.isEmpty()) {
1585         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1586     }
1587
1588     return 0;
1589 }
1590
1591 void KItemListController::updateExtendedSelectionRegion()
1592 {
1593     if (m_view) {
1594         const bool extend = (m_selectionBehavior != MultiSelection);
1595         KItemListStyleOption option = m_view->styleOption();
1596         if (option.extendedSelectionRegion != extend) {
1597             option.extendedSelectionRegion = extend;
1598             m_view->setStyleOption(option);
1599         }
1600     }
1601 }
1602
1603 bool KItemListController::onPress(const QPointF &pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons)
1604 {
1605     Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), buttons);
1606
1607     if (buttons & (Qt::BackButton | Qt::ForwardButton)) {
1608         // Do not select items when clicking the back/forward buttons, see
1609         // https://bugs.kde.org/show_bug.cgi?id=327412.
1610         return true;
1611     }
1612
1613     const QPointF pressedMousePos = m_view->transform().map(pos);
1614
1615     if (m_view->isAboveExpansionToggle(m_pressedIndex.value_or(-1), pressedMousePos)) {
1616         m_selectionManager->endAnchoredSelection();
1617         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1618         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1619         return true;
1620     }
1621
1622     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex.value_or(-1), pressedMousePos);
1623     if (m_selectionTogglePressed) {
1624         m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1625         // The previous anchored selection has been finished already in
1626         // KItemListSelectionManager::setSelected(). We can safely change
1627         // the current item and start a new anchored selection now.
1628         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1629         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1630         return true;
1631     }
1632
1633     const bool shiftPressed = modifiers & Qt::ShiftModifier;
1634     const bool controlPressed = (modifiers & Qt::ControlModifier) || m_selectionMode; // Keeping selectionMode similar to pressing control will hopefully
1635                                                                                       // simplify the overall logic and possibilities both for users and devs.
1636     const bool leftClick = buttons & Qt::LeftButton;
1637     const bool rightClick = buttons & Qt::RightButton;
1638
1639     // The previous selection is cleared if either
1640     // 1. The selection mode is SingleSelection, or
1641     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
1642     //    a) Shift or Control are pressed.
1643     //    b) The clicked item is selected already. In that case, the user might want to:
1644     //       - start dragging multiple items, or
1645     //       - open the context menu and perform an action for all selected items.
1646     const bool shiftOrControlPressed = shiftPressed || controlPressed;
1647     const bool pressedItemAlreadySelected = m_pressedIndex.has_value() && m_selectionManager->isSelected(m_pressedIndex.value());
1648     const bool clearSelection = m_selectionBehavior == SingleSelection || (!shiftOrControlPressed && !pressedItemAlreadySelected);
1649
1650     // When this method returns false, a rubberBand selection is created using KItemListController::startRubberBand via the caller.
1651     if (clearSelection) {
1652         const int selectedItemsCount = m_selectionManager->selectedItems().count();
1653         m_selectionManager->clearSelection();
1654         // clear and bail when we got an existing multi-selection
1655         if (selectedItemsCount > 1 && m_pressedIndex.has_value()) {
1656             const auto row = m_view->m_visibleItems.value(m_pressedIndex.value());
1657             const auto mappedPos = row->mapFromItem(m_view, pos);
1658             if (pressedItemAlreadySelected || row->iconRect().contains(mappedPos) || row->textRect().contains(mappedPos)) {
1659                 // we are indeed inside the text/icon rect, keep m_pressedIndex what it is
1660                 // and short-circuit for single-click activation (it will then propagate to onRelease and activate the item)
1661                 // or we just keep going for double-click activation
1662                 if (m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced) {
1663                     if (!pressedItemAlreadySelected) {
1664                         // An unselected item was clicked directly while deselecting multiple other items so we select it.
1665                         m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1666                         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1667                         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1668                     }
1669                     return true; // event handled, don't create rubber band
1670                 }
1671             } else {
1672                 // we're not inside the text/icon rect, as we've already cleared the selection
1673                 // we can just stop here and make sure handlers down the line (i.e. onRelease) don't activate
1674                 m_pressedIndex.reset();
1675                 // we don't stop event propagation and proceed to create a rubber band and let onRelease
1676                 // decide (based on m_pressedIndex) whether we're in a drag (drag => new rubber band, click => don't select the item)
1677                 return false;
1678             }
1679         }
1680     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && leftClick) {
1681         // The user might want to start dragging multiple items, but if he clicks the item
1682         // in order to trigger it instead, the other selected items must be deselected.
1683         // However, we do not know yet what the user is going to do.
1684         // -> remember that the user pressed an item which had been selected already and
1685         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
1686         m_clearSelectionIfItemsAreNotDragged = true;
1687
1688         if (m_selectionManager->selectedItems().count() == 1 && m_view->isAboveText(m_pressedIndex.value_or(-1), pressedMousePos)) {
1689             Q_EMIT selectedItemTextPressed(m_pressedIndex.value_or(-1));
1690         }
1691     }
1692
1693     if (!shiftPressed) {
1694         // Finish the anchored selection before the current index is changed
1695         m_selectionManager->endAnchoredSelection();
1696     }
1697
1698     if (rightClick) {
1699         // Stop rubber band from persisting after right-clicks
1700         KItemListRubberBand *rubberBand = m_view->rubberBand();
1701         if (rubberBand->isActive()) {
1702             disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1703             rubberBand->setActive(false);
1704             m_view->setAutoScroll(false);
1705         }
1706
1707         if (!m_pressedIndex.has_value()) {
1708             // We have a right-click in an empty region, don't create rubber band.
1709             return true;
1710         }
1711     }
1712
1713     if (m_pressedIndex.has_value()) {
1714         // The hover highlight area of an item is being pressed.
1715         const auto row = m_view->m_visibleItems.value(m_pressedIndex.value()); // anything outside of row.contains() will be the empty region of the row rect
1716         const bool hitTargetIsRowEmptyRegion = !row->contains(row->mapFromItem(m_view, pos));
1717         // again, when this method returns false, a rubberBand selection is created as the event is not consumed;
1718         // createRubberBand here tells us whether to return true or false.
1719         bool createRubberBand = (hitTargetIsRowEmptyRegion && m_selectionManager->selectedItems().isEmpty());
1720
1721         if (rightClick && hitTargetIsRowEmptyRegion) {
1722             // We have a right click outside the icon and text rect but within the hover highlight area.
1723             // We don't want items to get selected through this, so we return now.
1724             return true;
1725         }
1726
1727         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1728
1729         switch (m_selectionBehavior) {
1730         case NoSelection:
1731             break;
1732
1733         case SingleSelection:
1734             m_selectionManager->setSelected(m_pressedIndex.value());
1735             break;
1736
1737         case MultiSelection:
1738             if (controlPressed && !shiftPressed && leftClick) {
1739                 // A left mouse button press is happening on an item while control is pressed. This either means a user wants to:
1740                 // - toggle the selection of item(s) or
1741                 // - they want to begin a drag on the item(s) to copy them.
1742                 // We rule out the latter, if the item is not clicked directly and was unselected previously.
1743                 const auto row = m_view->m_visibleItems.value(m_pressedIndex.value());
1744                 const auto mappedPos = row->mapFromItem(m_view, pos);
1745                 if (!row->iconRect().contains(mappedPos) && !row->textRect().contains(mappedPos) && !pressedItemAlreadySelected) {
1746                     createRubberBand = true;
1747                 } else {
1748                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1749                     m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1750                     createRubberBand = false; // multi selection, don't propagate any further
1751                     // This will be the start of an item drag-to-copy operation if the user now moves the mouse before releasing the mouse button.
1752                 }
1753             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
1754                 // Select the pressed item and start a new anchored selection
1755                 m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Select);
1756                 m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1757             }
1758             break;
1759
1760         default:
1761             Q_ASSERT(false);
1762             break;
1763         }
1764
1765         return !createRubberBand;
1766     }
1767
1768     return false;
1769 }
1770
1771 bool KItemListController::onRelease(const QPointF &pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons, bool touch)
1772 {
1773     const QPointF pressedMousePos = pos;
1774     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex.value_or(-1), pressedMousePos);
1775     if (isAboveSelectionToggle) {
1776         m_selectionTogglePressed = false;
1777         return true;
1778     }
1779
1780     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
1781         m_selectionManager->setSelected(m_pressedIndex.value_or(-1), 1, KItemListSelectionManager::Toggle);
1782         m_selectionTogglePressed = false;
1783         return true;
1784     }
1785
1786     const bool controlPressed = modifiers & Qt::ControlModifier;
1787     const bool shiftOrControlPressed = modifiers & Qt::ShiftModifier || controlPressed;
1788
1789     const std::optional<int> index = m_view->itemAt(pos);
1790
1791     KItemListRubberBand *rubberBand = m_view->rubberBand();
1792     bool rubberBandRelease = false;
1793     if (rubberBand->isActive()) {
1794         disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1795         rubberBand->setActive(false);
1796         m_oldSelection.clear();
1797         m_view->setAutoScroll(false);
1798         rubberBandRelease = true;
1799         // We check for actual rubber band drag here: if delta between start and end is less than drag threshold,
1800         // then we have a single click on one of the rows
1801         if ((rubberBand->endPosition() - rubberBand->startPosition()).manhattanLength() < QApplication::startDragDistance()) {
1802             rubberBandRelease = false; // since we're only selecting, unmark rubber band release flag
1803             // m_pressedIndex will have no value if we came from a multi-selection clearing onPress
1804             // in that case, we don't select anything
1805             if (index.has_value() && m_pressedIndex.has_value()) {
1806                 if (controlPressed && m_selectionBehavior == MultiSelection) {
1807                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1808                 } else {
1809                     m_selectionManager->setSelected(index.value());
1810                 }
1811                 if (!m_selectionManager->isAnchoredSelectionActive()) {
1812                     m_selectionManager->beginAnchoredSelection(index.value());
1813                 }
1814             }
1815         }
1816     }
1817
1818     if (index.has_value() && index == m_pressedIndex) {
1819         // The release event is done above the same item as the press event
1820
1821         if (m_clearSelectionIfItemsAreNotDragged) {
1822             // A selected item has been clicked, but no drag operation has been started
1823             // -> clear the rest of the selection.
1824             m_selectionManager->clearSelection();
1825             m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Select);
1826             m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1827         }
1828
1829         if (buttons & Qt::LeftButton) {
1830             bool emitItemActivated = true;
1831             if (m_view->isAboveExpansionToggle(index.value(), pos)) {
1832                 const bool expanded = m_model->isExpanded(index.value());
1833                 m_model->setExpanded(index.value(), !expanded);
1834
1835                 Q_EMIT itemExpansionToggleClicked(index.value());
1836                 emitItemActivated = false;
1837             } else if (shiftOrControlPressed && m_selectionBehavior != SingleSelection) {
1838                 // The mouse click should only update the selection, not trigger the item, except when
1839                 // we are in single selection mode
1840                 emitItemActivated = false;
1841             } else {
1842                 const bool singleClickActivation = m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced;
1843                 if (!singleClickActivation) {
1844                     emitItemActivated = touch && !m_selectionMode;
1845                 } else {
1846                     // activate on single click only if we didn't come from a rubber band release
1847                     emitItemActivated = !rubberBandRelease;
1848                 }
1849             }
1850             if (emitItemActivated) {
1851                 Q_EMIT itemActivated(index.value());
1852             }
1853         } else if (buttons & Qt::MiddleButton) {
1854             Q_EMIT itemMiddleClicked(index.value());
1855         }
1856     }
1857
1858     m_pressedMouseGlobalPos = QPointF();
1859     m_pressedIndex = std::nullopt;
1860     m_clearSelectionIfItemsAreNotDragged = false;
1861     return false;
1862 }
1863
1864 void KItemListController::startRubberBand()
1865 {
1866     if (m_selectionBehavior == MultiSelection) {
1867         QPoint startPos = m_view->transform().map(m_view->scene()->views().first()->mapFromGlobal(m_pressedMouseGlobalPos.toPoint()));
1868         if (m_view->scrollOrientation() == Qt::Vertical) {
1869             startPos.ry() += m_view->scrollOffset();
1870         } else {
1871             startPos.rx() += m_view->scrollOffset();
1872         }
1873
1874         m_oldSelection = m_selectionManager->selectedItems();
1875         KItemListRubberBand *rubberBand = m_view->rubberBand();
1876         rubberBand->setStartPosition(startPos);
1877         rubberBand->setEndPosition(startPos);
1878         rubberBand->setActive(true);
1879         connect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1880         m_view->setAutoScroll(true);
1881     }
1882 }
1883
1884 void KItemListController::slotStateChanged(QScroller::State newState)
1885 {
1886     if (newState == QScroller::Scrolling) {
1887         m_scrollerIsScrolling = true;
1888     } else if (newState == QScroller::Inactive) {
1889         m_scrollerIsScrolling = false;
1890     }
1891 }
1892
1893 #include "moc_kitemlistcontroller.cpp"